Sierra Wireless AirCards

Jeff jw at
Sun Feb 1 13:40:11 PST 2004


I was wondering if you could help me. I own a couple Sierra Wireless 710
aircards. They have been working fine on AT&T for a quite some time. I have
now switched my service to Tmobile. When I put the Tmobile sim card in the
aircard, the PC gives a messages "Invalid SIM". Can these aircards be
unlocked like a GSM cell phone? It has to be firmware because they sell the
same cards for all GSM providers.


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